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80864508 = 22361310993
BaseRepresentation
bin1001101000111…
…10010011111100
312122011100020210
410310132103330
5131200131013
612005112420
72001223404
oct464362374
9178140223
1080864508
114171177a
12230b8710
13139a3a2a
14aa4d804
157174cc3
hex4d1e4fc

80864508 has 24 divisors (see below), whose sum is σ = 189008848. Its totient is φ = 26908416.

The previous prime is 80864507. The next prime is 80864549. The reversal of 80864508 is 80546808.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80864507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1860 + ... + 12852.

Almost surely, 280864508 is an apocalyptic number.

It is an amenable number.

80864508 is an abundant number, since it is smaller than the sum of its proper divisors (108144340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80864508 is a wasteful number, since it uses less digits than its factorization.

80864508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11613 (or 11611 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 39.

The square root of 80864508 is about 8992.4695162119. The cubic root of 80864508 is about 432.4334854888.

The spelling of 80864508 in words is "eighty million, eight hundred sixty-four thousand, five hundred eight".

Divisors: 1 2 3 4 6 12 613 1226 1839 2452 3678 7356 10993 21986 32979 43972 65958 131916 6738709 13477418 20216127 26954836 40432254 80864508